What is the address of Dunlap WWTP?

The address on the plant’s EPA facility record is 3rd St, Dunlap, IA 51529, in Harrison County. Its coordinates are 41.8460, -95.6141. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Dunlap WWTP treat?

Dunlap WWTP treats an average of 0.14 MGD.

What treatment technology does Dunlap WWTP use?

Klarifi has identified one treatment structure or unit process at the Dunlap facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Dunlap WWTP?

The facility discharges under NPDES permit IA0042871, currently effective, expiring January 2030.

Is Dunlap WWTP in compliance?

Discharge monitoring reports show 16 violations at Dunlap WWTP in the last three years, 16 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Dunlap WWTP and how do I contact them?

Dunlap WWTP is a publicly owned treatment works in Dunlap, Iowa. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Dunlap WWTP

3rd St, Dunlap, IA 51529 · Harrison County · Publicly Owned Treatment Works

Average flow: 0.14 MGD

Design flow: —

NPDES permit: IA0042871; Effective

Permit expires: January 2030

Population served: 1,038; CWNS 2022

Dunlap WWTP is a publicly owned wastewater treatment works in Dunlap, Harrison County, Iowa treating an average of 0.14 million gallons per day, serving about 1,038 residents. It discharges under NPDES permit IA0042871 (effective), which expires in January 2030, with 16 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Dunlap WWTP.

Available with a free Klarifi account

See the full treatment train at Dunlap WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 16

Effluent violations: 16

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Dunlap WWTP, with validated emails and direct phone numbers.

Unlock 1 verified contact

Names, validated emails and direct phone numbers for decision-makers at Dunlap WWTP, plus the full compliance history and discharge data.

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Dunlap WWTP: frequently asked questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed October 26, 2026; facility record last updated November 5, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms

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